Combined motor and pump



H. B. LINDSAY.

COMBINED MOTOR lAND PUMP. APPLICATION FILED AuG.9. I92I.

1.333.733. I Pamdof. 31, 1922.'

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H. B. LINDSAY.

COMBINED MOTOR AND PUMP.

APPucATmN FILED Au a.9. 1921.

1,433,733, Patented Oct. 3L 1922.

2 SHEETS-SHEET 2.

31a/vendor Patent/ed @ein 31, 19.

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HARVEY B. LINDSAY, OF OAKLAND, CALEFORNIA, ASSIGNOR TO THE DRY-ZERO CORPO- JRATION, OF OAKLAND, CLJIFOBNEA, .l CORPORATION' OF CALIFORBIA.

COMBINED MOTOR AND PMP.

Application filed August 9, 1921.

To all whom t may concern.'

Be it known that I, HARVEY B. LINDSAY, a

citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Combined Motors and Pumps, of which the following is a specilication.

' My invention is a combined motor and pump, the object of which is to provide an inexpensive and' simple device which is particularly adapted for the circulation of brine in a refrigeration system.

The parts of the motor and pump have been so designed that they may be die cast to reduce the cost of manufacture.

A further object is to provide a means whereby the sizes of the motor and pump may be varied, that is, the units of the mechanism are identical so that others may he readily added teer taken from the device.

This pump will be particularly useful for small refrigeration systems, where water power is inexpensive', and where the stability and maintenance, cost of the device is a large item.

Referring 'to the annexed drawing in which my invention-is illustrated and which forms a part of this'speciication:

Figure lis a longitudinal section of my motor and pump.

Figure 2 is a cross section of the motor taken on line 2-2 of Figure 1.

Figure 3 is a cross section of the pump taken on line 3--3 of Figure 1.

Figure 4 is a longitudinal sectional view of a modified form of my invention.

Figure 5 is a longitudinal sectional View of a further modified form of my invention. in the drawing 1 indicates the motor and 2 the pumpV of my combined motor and pump. A casing 3 comprises a motor casing 4 and a pump casing 5,. a partition 6 forming one end wall of the motor casing and pump casing and dividing the same. The motor casing is formed of a plurality of sections 7, 8, and 9, the section 7 being integral at one end with the partition 6. An eXternal flange 1() is formed on the end of the section 7. The section 8 is open at its ends and external flanges 11 and 12 are formed on its ends. rihe fianges- 19-Lmud311 are bolted together by bolts 13, thus bolting the sections 7 and 8 together. The section 9 has an end wall 14 and an external a 15 at itsother of said gears or more than two, simpl Seriali No. 490,903.

end, said end wall forming'the outer head of the pump casing 4. The flanges 12 and 15 are bolted together by bolts 16, thus bolting the. sections 7 and 9 together. The pump casing ,5 is formed of a plurality of sections 17, 18 and 19, the section 17 being integral at one end with the partition 6. An external flange L20 is formed on the other end of the section 17. Flanges 21 and '22 are formed. externally on the respective ends of the casing sections 18. r1`he section 19 has an end wall 23 at one end and an external iiange 24 at itsfother end. The ange 21 of theinnermost section 18 is bolted to the flange 2O of the section 17 by bolts'25, thus bolting said section to the section 17 The flange 22 of the outermost section 18 is bolted to the flange 24 of section 19 by bolts 26, thus bolting said sections together. rllhe flanges 21 and 22 of the intermediate section 18 are respectively bolted to the flanges 22 and 21 of the innermost and outermost sections 18, by' bolts 27 and 28. A shaft 30 extends longitudinally through the upper part of the casing 3 and through partition 6 andis journaled in bearings 31, 32 and 33, in the end Wall 14 of section 9, in partition 6, and in the end wall 23 of the sect-ion 19 respectively. A shaft 35 extends longituf dinally through the lower part of the casing 3 and through partition 6 and is journaled in bearings 36, 37 and 88 in the end wall 14 of section 9, in partition 6, and in the end wall 23 of section 19 respectively. On the shaft in the motor casing 4 are keyed two gears 40 which respectively mesh with two gears 42 keyed on shaft 35 also within the motor casing, said gears forming the motor pistons. On the shaft 30 within the pump easing 5 are keyed four gears 45 which respectively mesh with four gears 46 keyed on shaft also within the pump casing. rlhe motor casing 4 is provided with an inlet 50 in one side and an outlet 51 in its other side opposite the point of mesh of the teeth of gears and 42. The pump casing 5 has an inlet 55 in one side and an outlet 56 in its other side opposite the point of mesh of the teeth 45 and 46.

While I have shown two gears y,40 and two gears 42 in the motor 1, l may use only one taking out the casing section 8 and bo ting the sections 7 and 9 together or by putting in more than onev of said sections.

While I have shown four gears 45 and four gears 46 in the pump, I may use only one of said gears "or more than four simply,

by taking out the sections 18 and bolting the sections 17 and 19 together or by adding i more sections 18.

The sections of the motor and the pum are bolted together midway between the en of the gears.

In the modified form of my invention shown in Figure 4 the end' seetions-50'and 51, lfor purposes of each in die casting, are flanged to fit the intermediate motor sections 52 and pump sections 53 respectively. The partition 6 is also extended to form flanges to which the sections 52 and 53 are secured.

In the modified form shown in Figure 5, the end sections 60 and 6l are extended to form flanges for the casing 62. The said casing is formed in one piece to extend the length of the motor and pump and is anged "bearing to be secured to the end sections 60 and 61.

gears keyed on each shaft meshing respectively w1th gears on the other shaft, each of said easings having an inlet and an outlet in its side walls opposite the point of mesh of the gears.

In testimony whereof I afiix my signature.

HARVEY B. LINDSAY. 

